Home / 686,985.36-947,972.04-381,056.40

Finding the Fourth Proportional to 686,985.36, 947,972.04 and 381,056.40

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Solution

The fourth proportional to 686,985.36, 947,972.04 and 381,056.40 is: 525,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,985.36 : 947,972.04 = 381,056.40 : x
  2. Step 2: Convert to fraction form
    686,985.36/947,972.04 = 381,056.40/x
  3. Step 3: Cross multiply
    686,985.36x = 947,972.04 × 381,056.40
  4. Step 4: Simplify right side
    686,985.36x = 361,230,812,863.06
  5. Step 5: Solve for x
    x = 361,230,812,863.06/686,985.36
  6. Step 6: Final answer
    x = 525,820.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.